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328 articles from MONDAY 4.6.2012
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MONDAY 4. JUNE, 2012
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23:56
Spy Telescopes Could Advance U.S. Dark Energy Mission
The two telescopes were designed to gaze down upon Earth from space to collect... -
23:51
Smooth Changeover Expected as Companies Transition to IPv6
With the clock ticking for the transition to IPv6, several major technology firms are making the switch on Wednesday to the new Internet protocol, including Microsoft, Google, YouTube and Yahoo. The Internet Society, a standards and advocacy organization, urged all businesses to make the move sooner rather than later.In a guest posting on Forbes magazine's Web site late last week, the Internet Society's Chief Technology Officer Leslie Daigle noted that "there is no question that we are running out" of Internet addresses with IPv4. She pointed out that in February of last year, the last block of 4.3 billion addresses from the current IPv4 global supply was issued to regional Internet Registry organizations, which handle the allocation and registration of addresses in their parts of their world.
Addresses Running Out Daigle said that there are now no remaining iPv4 addresses for the Asia Pacific region, and addresses are expected to run out for Europe this year, for the U.S. next year, and for Latin America and Africa in 2014. IPv6, on the other hand, is expected to be able to supply what some experts have calculated is 4 billion addresses for each person on Earth.
There's a long way to go in transitioning to IPv6, not only in making the actual switch but also in making businesses aware. Daigle said that only 12 percent of businesses had begun planning to make the transition as of the end of last year, and 6 percent had indicated they were not aware of the situation. A recent survey by Arbor Networks, which monitors global traffic, found that about 1,500 Web sites and Internet Service Providers in 22 countries have now enabled IPv6.
Other major companies making the transition on June 6 on their main Web sites include Facebook, Netflix, Cisco and Bing. Network operators, including Comcast and...
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23:50
Editorial | Philosophy: Back to big
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23:46
RIM stock dips below $10
Research In Motion Ltd. stock has sunk below $10 for the first time in almost a decade.
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23:43
Out There: Big Data’s Parallel Universe Brings Fears, and a Thrill
The world’s bank of digital information is growing at a rate of five trillion bits a second, and there’s a lot going on inside that we don’t know about.
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23:38
NASA has received two telescopes as or more powerful than the Hubble from an unexpected source: the U.S. satellite spy agency, according to newly declassified information.
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23:35
Venus Transit 2012: What You'll See This Week (Pictures)
Get a glimpse of what to expect during this week's transit of Venus, including sunrise shots, pinhole projections, and views from space. -
23:28
A Dutch company has launched a reality television-type project to establish a permanent human settlement on Mars by 2023.
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23:23
Entomophobes rejoice! Prehistory's biggest insects were likely easy prey to dinosaur-era birds, a new study says.
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23:21
Huge New Mexico Wildfire Spotted by NASA Satellite
A NASA Earth-observing satellite has snapped a photo of the huge wildfire chewing up vast swathes of southwestern New Mexico.
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23:16Zinc may work very differently when given briefly to dangerously ill children rather than as a supplement given regularly to healthy ones.
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23:16Some patients with epilepsy benefit from treatment with anti-inflammatory drugs, suggesting that brain inflammation plays a larger role in the disease than has been suspected.
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23:13
Space shuttle Enterprise suffered minor wing damage on Sunday (June 3) when it collided with the navigation guides for a New York railroad bridge during the first half of its sea trek to a Manhattan museum for display.
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23:04Many doctors will ignore the findings that tests and procedures have been overused and keep doing what they have been doing all along.
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23:01A New Zealand lizard called the tuatara eats like no other animal — sliding its lower jaw forward and backward, it can slice its food like a steak knife.
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23:00
Stockholm: Birth of the green generation
The 1972 gathering that put the environment on the global map -
22:39
Scientists develop high-tech gadgets like the joggobot and diet goggles in hopes of helping people with fitness and food-intake goals.
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22:33It's a spectacle that won't repeat for another century -- the sight of Venus slowly inching across the face of the sun.
The silhouette of Venus will march across the face of the sun on Tuesday from the Western Hemisphere (Wednesday from the Eastern Hemisphere). Known as a transit of Venus, this won't happen again until 2117.
Venus will appear as a small black dot gliding across the disk of the sun. As in a solar eclipse, do not stare directly at the sun; wear special protective glasses.
VIEWING The entire transit, lasting 6 hours and 40 minutes, will be visible from the western Pacific, eastern Asia and eastern Australia.
Skywatchers in the United States, Canada, Mexico, Central America, and the northern part of South America will see the beginning of the show before the sun sets. Europe, western and central Asia, eastern Africa and western Australia will catch the tail end after sunrise. Those who don't want to leave their homes can follow live webcasts by NASA and various observatories.
BE CAREFUL You can damage your eyes by staring at the sun. People need to remember that as they turn to the skies to watch and keep in mind a few tips.
Wear special viewing glasses such as solar eclipse glasses. You can buy them online or at your local museum. Alternatively, you can go to a hardware store and get a pair of welder's glasses, but make sure it's number 14 or darker. Or make a pinhole projector with cardboard. Do not watch the transit with regular sunglasses.
Peer through telescopes outfitted with special filters at viewing parties hosted by museums, observatories and astronomy clubs. Many will also have experts on hand who could talk about the history and significance of a Venus transit.
Tune in online. NASA, Slooh.com and the Exploratorium in San Francisco are among...
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22:33Doctors have successfully dropped the first "smart bomb" on breast cancer, using a drug to deliver a toxic payload to tumor cells while leaving healthy ones alone.
In a key test involving nearly 1,000 women with very advanced disease, the experimental treatment extended by several months the time women lived without their cancer getting worse, doctors planned to report Sunday at a cancer conference in Chicago.
More importantly, the treatment seems likely to improve survival; it will take more time to know for sure. After two years, 65 percent of women who received it were still alive versus 47 percent of those in a comparison group given two standard cancer drugs.
That margin fell just short of the very strict criteria researchers set for stopping the study and declaring the new treatment a winner, and they hope the benefit becomes more clear with time. In fact, so many women on the new treatment are still alive that researchers cannot yet determine average survival for the group.
"The absolute difference is greater than one year in how long these people live," said the study's leader, Dr. Kimberly Blackwell of Duke University. "This is a major step forward."
A warning to hopeful patients: the drug is still experimental, so not available yet. Its backers hope it can reach the market within a year.
The treatment builds on Herceptin, the first gene-targeted therapy for breast cancer. It is used for about 20 percent of patients whose tumors overproduce a certain protein.
Researchers combined Herceptin with a chemotherapy so toxic that it can't be given by itself, plus a chemical to keep the two linked until they reach a cancer cell where the poison can be released to kill it.
This double weapon, called T-DM1, is the "smart bomb," although it's actually not all that smart -- Herceptin isn't a homing device,...
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22:33Years of ferocious storms have threatened to gnaw away the western tip of a popular beachfront park a two hours drive north of Los Angeles. Instead of building a 500-foot (150 meter)-long wooden defense next to the pier to tame the tide, the latest thinking is to flee.
Work is under way to gauge the toll of ripping up parking lots on the highly eroded west end of Goleta Beach County Park and moving a scenic bike path and buried utility lines inland away from lapping waves.
Up and down the California coast, some communities are deciding it's not worth trying to wall off the encroaching ocean. Until recently, the thought of bowing to nature was almost unheard of.
But after futile attempts to curb coastal erosion -- a problem that is expected to grow worse with rising seas fueled by global warming -- there is growing acknowledgment that the sea is relentless and any line drawn in the sand is likely to eventually wash over.
"I like to think of it as getting out of the way gracefully," said David Revell, a senior coastal scientist at ESA PWA, a San Francisco-based environmental consulting firm involved in Goleta and other planned retreat projects.
The issue of whether to stay or flee is being confronted around the globe. Places experimenting with retreat have adopted various strategies. In Britain, for example, several sites along the Essex coast have deliberately breached seawalls to create salt marshes, which act as a natural barrier to flooding.
In the U.S., the starkest example can be found in Alaska, where entire villages have been forced to move to higher ground or are thinking about it in the face of melting sea ice. Hawaii's famous beaches are slowly shrinking and some scientists think it's a matter of time before the state has to explore...
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22:31A flame may seem like a simple thing, but explaining why it exists can be tricky.
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22:24
Axel Springer buys 76 pct of Poland's Onet portal
Poland's TVN commercial media group said Monday it had sold 76 percent of Onet, a major Polish Internet portal, to Germany's Axel Springer media for nearly 969 million zloty (220 million euros, $275 million). -
22:24What happens when visual art comes into close contact with computer science? Stereoscopic magic.
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22:24A new Purdue University-developed process for creating biofuels has shown potential to be cost-effective for production scale, opening the door for moving beyond the laboratory setting.
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22:24Scientists have developed an X-ray imaging method that could drastically improve the contrast of computed tomography (CT) scans whilst reducing the radiation dose deposited during the scan. The new method is based on the combination of the high contrast obtained by an X-ray technique known as grating interferometry with the three-dimensional capabilities of CT. It is also compatible with clinical CT apparatus, where an X-ray source and detector rotate continuously around the patient during the scan. The results are published in Proceedings of the National Academy of Sciences (PNAS) dated June 4-8, 2012.
Naposledy aktualizované zdroje
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ScienceDaily (dnes, 18:15)
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Technology Review Feed - Tech Review Top Stories (dnes, 08:34)
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EurekAlert (dnes, 06:00)
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NASA (17. 5, 02:56)
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Discovery (7. 3, 18:11)
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TIME (27. 7, 08:30)
